Two men, ages 20 and 21, were arrested for robbing a 38-year-old man in Waikiki. The incident happened early this morning around 12:38 a.m. The complainant said the 21-year-old suspect approached him and demanded money. When the complainant refused, the 21-year-old suspect punched him and the 20-year-old suspect took the money from complainant's shorts. HPD officers located and arrested the suspects minutes after the incident.